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Forum: Psychology Statistics

Psychological statistics, quantitative psychology. Statistics in social sciences. Experimental design, data analysis.

  1. Arrow Sticky Thread Sticky: Please Read This Before Posting

    Please provide us with some basic information before we can give useful advice: 1. purpose of the study / research question / hypotheses, if...

    Started by quark‎, 11-10-2005 12:21 AM
    • Replies: 0
    • Views: 24,243
    11-10-2005, 12:21 AM Go to last post
  1. What analysis do I run?

    Hi All, I am conducting a study within the ASD population that is looking at IQ, executive function and adaptive skills for which of them I am...

    Started by jeannette88‎, 04-18-2017 04:04 PM
    • Replies: 10
    • Views: 282
    Today, 08:46 AM Go to last post
  2. Red face Test Your Quantitatie Research Design Knowledge

    CAN SOMEONE PLEASE HELP WITH THE FOLLOWING QUESTIONS??? Karsh (1983) designed an experiment on the relationship between early handling and...

    Started by letsgetstatistic‎, 04-20-2017 11:52 AM
    confounds, helping, levels of iv and dv., quiz
    • Replies: 2
    • Views: 107
    04-21-2017, 08:38 AM Go to last post
  3. Testing differences between groups over time

    Hello, I am writing a research proposal that looks at a change in scores over time between three groups. Here is the basic set-up: Three...

    Started by bbphd17‎, 04-19-2017 09:56 AM
    • Replies: 0
    • Views: 87
    04-19-2017, 09:56 AM Go to last post
  4. Testing between scores of three groups

    17 teachers answered a survey of 27 questions for three Groups of students (below average, average, above average) The answers to the questions are...

    Started by Rolsha‎, 04-17-2017 10:10 PM
    • Replies: 6
    • Views: 204
    04-19-2017, 04:29 AM Go to last post
  5. Correcting for repeated testing with 4 mediation analyses?

    Hi guys, First time poster here, sorry if I post this at the wrong spot or something like that. For my thesis if have the following 4...

    Started by Yulir1993‎, 04-17-2017 11:00 AM
    bonferroni correction, mediation analysis, multiple testing, regression analysis, spss 23
    • Replies: 0
    • Views: 92
    04-17-2017, 11:00 AM Go to last post
  6. Descriptive Statistics and Regression Help

    Hi all, I need help writing some results for my report. I am very rusty with statistics as I've taken a long break from it all :( safe to say I...

    Started by crazycatlady‎, 04-15-2017 06:30 PM
    • Replies: 0
    • Views: 137
    04-15-2017, 06:30 PM Go to last post
  7. Correlation Analysis on Ordinal and Continuous Data (Spearman's?)

    My study is looking at the effects of working memory training on smoking related behaviour. We basically trained half participants with a dual n back...

    Started by olihowker‎, 04-14-2017 08:16 AM
    • Replies: 0
    • Views: 117
    04-14-2017, 08:16 AM Go to last post
  8. Question ANOVA What ANOVA should I use?

    I'm writing a research proposal and I'm not sure what statitical analysis I should use. I was thinking about using ANOVA, but I don't know what ANOVA...

    Started by kphill‎, 04-13-2017 04:41 PM
    • Replies: 7
    • Views: 214
    04-13-2017, 08:36 PM Go to last post
  9. Question I don't know what statistical analysis to use

    Hello, I'm writing a research proposal for my psy 400 class and I'm not sure what statistical analysis to use for my expected results. The purpose of...

    Started by kphill‎, 04-13-2017 04:13 PM
    • Replies: 0
    • Views: 44
    04-13-2017, 04:13 PM Go to last post
  10. warning: "covariance matrix of latent variables is not positive definite"

    Hi all, I ran a 5 factor CFA model, and I got a warning saying that the covariance matrix of my latent variables is not positive definite. I...

    Started by myautumn28‎, 04-13-2017 12:17 PM
    • Replies: 2
    • Views: 131
    04-13-2017, 03:12 PM Go to last post
  11. Metaanalysis Tanner-stages Probit/Logit/...

    Hello, I am running a metaanalysis about the ages of girls and boys in the Tanner-stages of puberty (https://en.wikipedia.org/wiki/Tanner_scale)....

    Started by Filip2017‎, 04-13-2017 01:41 PM
    • Replies: 0
    • Views: 106
    04-13-2017, 01:41 PM Go to last post
  12. Question Finding an overall level of Motivation (from a motivational questionnaire)

    Hi, i was hoping i could get some help concerning the statistics of factors in a Motivational Questionnaire. Long story short, in the company i...

    Started by TypicalChristy‎, 04-13-2017 10:01 AM
    absolute values, factors, motivation, overall motivation, statistics
    • Replies: 0
    • Views: 72
    04-13-2017, 10:01 AM Go to last post
  13. Tests for B mediating or moderating A->C, w/ path analysis?

    I'm hoping to use path analysis to learn more about the relationship between three individual difference variables. I'm new to Mplus and to path...

    Started by Parker5901‎, 04-12-2017 09:58 PM
    • Replies: 0
    • Views: 53
    04-12-2017, 09:58 PM Go to last post
  14. Smile Multiple IVs and DVs- which test should be used?

    Hey guys! I've been provided with a data set and asked to do two analyses based on the following study aims: 1. Look at associations between the...

    Started by psychstudent17‎, 04-12-2017 03:04 AM
    • Replies: 1
    • Views: 139
    04-12-2017, 08:25 AM Go to last post
  15. Determining sample size from confidence interval and significance level

    Hi everyone, I am studying a university level stats course at the moment and I have been given some excerises to take home that I am struggling...

    Started by sophies27‎, 04-08-2017 03:11 PM
    sample size, sample size calculation, sample size determination
    • Replies: 1
    • Views: 211
    04-09-2017, 04:31 PM Go to last post
  16. Determining If Difference Score Was Obtained By Chance

    For example lets say a counselor has been using a depression test on clients at the start of treatment and again 6 months later. When the counselor...

    Started by Stats Mang‎, 04-07-2017 11:31 AM
    alpha, difference scores, z score
    • Replies: 2
    • Views: 201
    04-07-2017, 08:36 PM Go to last post
  17. Manova?

    Hi, I am doing data analisis for my research and I kinda got stuck with it, I have seached alot and I am getting inconsistent informations if it...

    Started by Karobed‎, 04-06-2017 08:44 AM
    manova
    • Replies: 0
    • Views: 55
    04-06-2017, 08:44 AM Go to last post
  18. SEM Mediation using bootstrapping approach

    Hi, I am performing mediation analysis using structural equation modelling (I'm using the lavaan package in 'R'). I am using the bootstrapping...

    Started by EmmaL‎, 04-03-2017 01:20 PM
    bootstrapping, indirect effects, mediation, structural equation model
    • Replies: 4
    • Views: 301
    04-05-2017, 08:53 AM Go to last post
  19. POSAC - maximum possible amount of variable and how to deal with it

    Question about Partial Order Scalogram Analysis by Coordinates (POSAC) - solved right after I posted this thread. Got paper by S. Shye how to deal...

    Started by Liliana‎, 04-05-2017 06:20 AM
    • Replies: 1
    • Views: 157
    04-05-2017, 06:30 AM Go to last post
  20. Family Relationship version of Factor analysis for Japanese Groups

    I am trying to create a scale to measure "comportment" (bodily manners, gyougi) among Japanese and I am doing an exploratory factor analysis...

    Started by timtak‎, 04-03-2017 11:58 PM
    • Replies: 0
    • Views: 191
    04-03-2017, 11:58 PM Go to last post
  21. Lack of homogeneity of Variance in two-way ANOVA

    Hi, I am currently analyzing my data in SPSS. Since I am testing the effect of two independent variables on a dependent one, I was planning on...

    Started by Klaro26‎, 03-29-2017 07:56 AM
    homogeneity, levene's, significance, spss anova
    • Replies: 4
    • Views: 383
    04-02-2017, 12:03 AM Go to last post
  22. Signal detection theory - d' and C - unexpected results

    Hi I've conducted a 2-alternative forced-choice experiment whereby participants were shown images, and then in the test phase had to choose which...

    Started by iwsmuir105‎, 03-30-2017 12:51 PM
    • Replies: 1
    • Views: 196
    04-01-2017, 11:34 PM Go to last post
  23. Correction for attenuation: WAIS-IV and test X

    Hi, I have been asked to do a correction for attenuation of the context between a specific test (Lets call it test X) and a specific part-test of...

    Started by UnnieE‎, 03-30-2017 09:48 AM
    attenuation, reliability, wais-iv
    • Replies: 7
    • Views: 330
    03-30-2017, 03:08 PM Go to last post
  24. Interpreting my data (bias?)

    Hello everyone! I had participants learn items from a list and afterwards do a recognition test on them. (EXPERIMENTAL GROUP) the same...

    Started by laraa‎, 03-24-2017 11:47 AM
    • Replies: 0
    • Views: 385
    03-24-2017, 11:47 AM Go to last post
  25. Correct way of reporting Chi square with IV 4 levels results

    Sorry, if the question is silly. Cannot find anywhere what will be a correct way of reporting Chi Square results for the case when IV has 4 levels (4...

    Started by Liliana‎, 03-23-2017 07:28 AM
    • Replies: 4
    • Views: 398
    03-23-2017, 10:02 PM Go to last post
  26. Signal Detection Theory - Calculating d'

    Hi there. I'm currently doing the analysis for my undergraduate study, and I'm wondering if someone could help me with Signal Detection Theory,...

    Started by iwsmuir105‎, 03-23-2017 10:56 AM
    • Replies: 3
    • Views: 356
    03-23-2017, 12:43 PM Go to last post
  27. Need help in Polynomial Regression : constant value and control variables

    Solved. Please remove thank you : )

    Started by angelove114‎, 03-22-2017 11:50 PM
    • Replies: 0
    • Views: 199
    03-22-2017, 11:50 PM Go to last post
  28. Which post-hoc test for a One way repeated measures ANOVA

    Can I use a Tukey test to test all pairwise comparisons for a repeated measures design? :) THANKS

    Started by rachel_joke‎, 03-22-2017 06:03 AM
    • Replies: 3
    • Views: 314
    03-22-2017, 10:45 PM Go to last post
  29. How to organize Multilevel Model in R

    Hello, I am currently running an experiment where we measure escape latency and seeing if the presence of a drug has an effect on this. Each rat...

    Started by atamalu‎, 03-22-2017 10:40 PM
    • Replies: 0
    • Views: 194
    03-22-2017, 10:40 PM Go to last post
  30. Two-way MANOVA

    Hi, how do I fully follow up this MANOVA, please??? 2 IVs: Exposure Therapy (2 levels: control, or virtual reality) and Medication (2 levels:...

    Started by Quickquez‎, 03-22-2017 04:02 PM
    follow-up, manova, two-way
    • Replies: 0
    • Views: 156
    03-22-2017, 04:02 PM Go to last post
  31. Which ANOVA to use

    I have 20 subjects who are all presented with 12 pictures. These 12 pictures are split into 4 categories: Big Inanimate, Big Animate, Small...

    Started by rachel_joke‎, 03-21-2017 01:29 PM
    • Replies: 2
    • Views: 238
    03-22-2017, 06:04 AM Go to last post
  32. Help finding a term used in validity - psychometric testing

    A colleague has asked me for help with the name of a recognised situation whereby truncated information (e.g. a short questionnaire) is used to...

    Started by VBee‎, 03-15-2017 10:04 AM
    • Replies: 10
    • Views: 574
    03-22-2017, 04:22 AM Go to last post
  33. Likert scale data -can I use paired t-test? What about normality testing?

    Hey all! I have read many contradicting manuals and advice, so I decided to ask the best experts –you guys :) I have data from 40 subjects. I...

    Started by Labestia‎, 03-16-2017 01:10 PM
    likert, likert scale, normality, t test
    • Replies: 6
    • Views: 541
    03-19-2017, 05:19 PM Go to last post
  34. Interaction follow-ups

    Hi! I have ran a 2x2x2 ANOVA (B-W-W). There was no 3-way interaction, but there was a 2-way interaction for my 2 within-subjects factors. I'm a...

    Started by fffrost‎, 03-19-2017 09:47 AM
    • Replies: 0
    • Views: 221
    03-19-2017, 09:47 AM Go to last post
  35. MANCOVA MANOVA_assumptions_ heterogeneity of regression slopes

    Hallo there :wave:, I am examining the difference in illness models (by asking several questions: DV) for refugees and non-refugees (IV) (both n=...

    Started by K_T‎, 03-17-2017 01:25 PM
    assumptions, heterogeneity, mancova, manova, regression slopes
    • Replies: 0
    • Views: 178
    03-17-2017, 01:25 PM Go to last post
  36. Smile MANCOVA MANOVA_assumptions_ heterogeneity of regression slopes

    Hallo there :wave:, I am examining the difference in illness models (by asking several Likert scale type questions: DV) for refugees (n=100) and...

    Started by K_T‎, 03-17-2017 12:11 PM
    assumptions, heterogeneity, mancova, manova, regression slopes
    • Replies: 0
    • Views: 112
    03-17-2017, 12:11 PM Go to last post
  37. What are the limitations to feeling thermometers?

    Hi there, I received the following comment from a reviewer and am a bit stuck on how I should answer: The comment is referring to our use...

    Started by jm2209‎, 03-16-2017 03:18 PM
    • Replies: 2
    • Views: 272
    03-16-2017, 03:52 PM Go to last post
  38. Green's scaling analysis of 3 items

    I'm doing a study on helping behaviour in toddlers, trying to see if the three forms of helping I've measured are scalable. I'm using Green's...

    Started by JessR‎, 03-14-2017 09:03 PM
    • Replies: 0
    • Views: 220
    03-14-2017, 09:03 PM Go to last post
  39. Does it make sense to conduct a Hierarchical Principal Compomnent Analysis (PCA)?

    So I have twelve variables that theoretically belong to the same dimension and I want do reduce them to one single item. A hierarchical factor...

    Started by favoone‎, 03-07-2017 12:24 PM
    factor analysis, hierarchical method, principal component
    • Replies: 1
    • Views: 400
    03-13-2017, 08:56 AM Go to last post
  40. Which test to use?

    I have to analyze a within-subject experiment with a continuous dependent variable and a categorical dependent variable (brain stimulation: Anode,...

    Started by mathieu‎, 03-10-2017 10:36 AM
    ancova, anova, covariate
    • Replies: 1
    • Views: 283
    03-13-2017, 08:53 AM Go to last post
  41. Assumptions of Bonferroni correction

    Hi everyone, I recently learned that the Bonferroni correction assumes that all of the hypothesis tests we're conducting on the same data are...

    Started by myautumn28‎, 03-10-2017 05:18 PM
    • Replies: 3
    • Views: 413
    03-13-2017, 08:52 AM Go to last post
  42. how to calculate ICC for sample of 10 with two assessor

    i have two assessors rating on picture cue . SME rateds each stories respective to picture in TAT like test with rating on likert 5 point scale from...

    Started by Dr.A.Suresh‎, 03-13-2017 02:22 AM
    icc for sample (n=10)
    • Replies: 1
    • Views: 291
    03-13-2017, 08:49 AM Go to last post
  43. Simple Mediation Model - output using Mplus

    Hi, Can someone help me interpret my output from Mplus 7 please? The model is simple i.v = x1a mediator = M dv = Y1 I have attached the...

    Started by laula‎, 03-10-2017 03:42 PM
    • Replies: 0
    • Views: 223
    03-10-2017, 03:42 PM Go to last post
  44. Statistical analysis

    Hi there I'm a student doing a dissertation about the influence of reward satisfaction on turnover intention. At the moment I'm wondering how to...

    Started by Hypnoz‎, 02-05-2017 02:29 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 1,739
    03-09-2017, 12:18 PM Go to last post
  45. Cohen's Kappa on Categorical Data in R - Gestural Repertoires

    Hi There, First time user here. I am a Master's student of Primatology, I wasn't sure Psychology Stats was the way to go but it seems to fit...

    Started by KayBaby555‎, 03-08-2017 04:44 AM
    • Replies: 0
    • Views: 360
    03-08-2017, 04:44 AM Go to last post
  46. How should I analyse this data?

    Hello! I've been banging my head against the wall trying to work out the best way of looking at this data. I think I'm missing something simple,...

    Started by Sin_Nie‎, 02-21-2017 11:10 AM
    • Replies: 6
    • Views: 669
    03-07-2017, 05:37 AM Go to last post
  47. Smile Which inferential stats test to use? PLEASE HELP

    Hello all, Someone please help. I'm conducting a study on how group gender ratios influences stereotype threat within career choices and level of...

    Started by ashleymichelle‎, 03-02-2017 09:45 AM
    anova, ordinal, psychology, regression analysis
    • Replies: 11
    • Views: 556
    03-06-2017, 12:40 PM Go to last post
  48. Quick Cronbach's Alpha Question

    Hi all, This may seem like a silly question, but I was wondering if I should remove outliers prior to running reliability analysis or run the...

    Started by Aegislash‎, 02-27-2017 05:32 AM
    cronbach's alpha, outliers, reliability
    • Replies: 14
    • Views: 974
    03-03-2017, 02:16 AM Go to last post
  49. pre post design - analysis help

    Hi everyone, I'm analyzing some data for a research project and need some help selecting the appropriate test that will answer my questions of...

    Started by xmorphicx‎, 03-02-2017 09:33 PM
    • Replies: 0
    • Views: 343
    03-02-2017, 09:33 PM Go to last post
  50. Help Please

    A local United Way and a group of community agencies in a large urban area have decided that making sure young children are ready to enter the school...

    Started by Ktina‎, 02-27-2017 08:30 PM
    • Replies: 0
    • Views: 481
    02-27-2017, 08:30 PM Go to last post
  51. Which test to run?

    I have been getting conflicting results from a few people on what test to use, so please let me know what you think. The design: We have 3...

    Started by atamalu‎, 02-14-2017 07:51 PM
    2 Pages
    1 2
    • Replies: 26
    • Views: 1,483
    02-25-2017, 04:40 PM Go to last post
  52. Test for assessing if gender, organisation, management level and age have an impact

    Hi, I am looking to carry out a multiple regression analysis to assess the factors that predict participant's post-training scores on the...

    Started by EmmaL‎, 02-19-2017 06:28 AM
    • Replies: 10
    • Views: 686
    02-23-2017, 11:29 PM Go to last post
  53. reversed, inverted items... MANOVA

    Do I necessarily need to recode my inverted (negatively worded) items before running a MANOVA? I am running the MANOVA on all items of a...

    Started by T.H.‎, 02-23-2017 07:30 AM
    likert scale, manova, negative wording, recode, reversed items
    • Replies: 0
    • Views: 366
    02-23-2017, 07:30 AM Go to last post
  54. mixing within trial, and between trial effects?

    Hi I'm hoping someone can suggest to this stats dunce an elegant way to analyse the following data. We make a recording from a neuron and apply a...

    Started by ar123‎, 02-22-2017 12:52 PM
    • Replies: 0
    • Views: 343
    02-22-2017, 12:52 PM Go to last post
  55. Inferential results interpretation? Please help

    two players number of games attended per player. t(66)= -3.09, p < .05 d = .35 What does this mean?

    Started by Deanabrown36‎, 02-16-2017 12:21 AM
    • Replies: 2
    • Views: 510
    02-16-2017, 08:56 AM Go to last post
  56. How to conduct a mixed-model analysis in SPSS?

    Hi! I am trying to conduct the following analysis on human subjects data using SPSS. It is my understanding that it requires mixed modeling, and I...

    Started by genericity‎, 02-07-2017 01:24 PM
    • Replies: 1
    • Views: 548
    02-14-2017, 01:26 PM Go to last post
  57. Inter rater agreement - Mezzich's Kappa

    Dear all, I want to assess the quality of the categorization handbook and the accordance between multiple raters who have categorized articles...

    Started by AnnaCop‎, 02-09-2017 09:27 AM
    • Replies: 0
    • Views: 495
    02-09-2017, 09:27 AM Go to last post
  58. general correlation question

    hello! if variable A is correlated to var B (.37) and var B is correlated to var C (.32), can we infer the correlation between var A and var C?...

    Started by mdc333‎, 02-07-2017 04:23 PM
    correlation
    • Replies: 7
    • Views: 674
    02-07-2017, 11:28 PM Go to last post
  59. Unhappy Statistical analysis, where to start with 2600 participants?

    1. purpose of the study / research question / hypotheses, if possible, provide some background or context for us. I'm looking at the dark triad...

    Started by triad‎, 02-06-2017 04:24 PM
    • Replies: 3
    • Views: 581
    02-06-2017, 09:26 PM Go to last post
  60. Very Quick Mediation question

    I want to know if the direct effect of X on Y is significant, whether it is still possible for X to be mediated through M? Thanks a million

    Started by pr15371‎, 02-05-2017 10:54 AM
    • Replies: 2
    • Views: 607
    02-06-2017, 12:34 PM Go to last post

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